Tried this today .
Installation was super fast :clap: , the fastest OS installation I have seen so far.
The new UI will take me quite a lot of time to get adjusted to. This new style looks more suitable for touch enabled devices, for desktops would have to figure out something to stop this Metro Style and get back to the regular explorer type.
By the way how do you close an application once you have launched it, I didn't see any menu or option to close an app (was a bit frustrating not to find the X button for most of the apps).